package BasicGrammar.Polymorphism.demo2;

public class Rect extends Shape{
    @Override
    public void draw() {
        System.out.println("画一个矩形....");
    }
}

abstract class A extends Shape {
    abstract void test();
}
class C extends A {
    @Override
    void test() {
    }
    @Override
    public void draw() {
    }
}
